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40m Log |
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Wed Nov 4 00:10:43 2020, gautam, Update, General, Vent activities today    
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Thu Nov 5 22:27:34 2020, gautam, Update, General, Vent activities today
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Fri Nov 6 11:36:37 2020, gautam, Update, General, ETMY suspension eigenmodes 
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Tue Nov 10 15:13:41 2020, rana, Update, General, ETMY suspension eigenmodes
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Thu Nov 12 14:26:35 2020, gautam, Update, General, ETMY suspension eigenmodes
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Sun Nov 8 20:22:35 2020, gautam, Update, General, Vent activities today
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Sun Nov 8 23:24:29 2020, Koji, Update, General, Vent activities today
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Mon Nov 9 17:40:17 2020, gautam, Update, General, Pumpdown 
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Tue Nov 10 11:31:13 2020, Koji, Update, General, Pumpdown
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Message ID: 15665
Entry time: Sun Nov 8 23:24:29 2020
In reply to: 15664
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Author: |
Koji |
Type: |
Update |
Category: |
General |
Subject: |
Vent activities today |
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> I didn't bother to align the green beams to the arm cavities or re-center the Oplevs - is this necessary? It is a step in the pre-close up checklist, so maybe we should do it... The green transmission does reach the PSL table...
I don't think so. The beam is reaching the PSL, so we have no motivation to change the green alignment. Regarding the oplev, the green refl should come back to the PDH PD and this gives us additional beam reference. As soon as we find the green resonance after the pumping, we can tweak the green axis so that the spots on the mirrors become reasonable (as well as the green trans CCD on the PSL table).
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